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seamless steel pipe (10) ; API 5L GRX42 seamless steel pipe (1) ; API 5L seamless steel pipe (5) ; ASTM A106 seamless steel pipe (5) ; ASTM A53 Seamless steel pipe (5) ; API 5L GRX56seamless steel pipe (1) ; API 5L GRX52 seamless steel pipe (1) ; API 5L GRX65 seamless steel pipe (1) ; ASTM A179 GRA Boiler tube (1) ; seamless steel tube (3) ; High pressure seamless tube (3) ; Boiler tube (3) ; ASTM A192 heat exchanger tube (1) ; ASTM A210A210M Boiler tube (1) ; ASTM A333 Grade 3 seamless pipe for Low-Temperature (1) ; low-temperature seamless steel pipe (2) ; ASTM A333 Grade 6 seamless pipe for Low-Temperature (1) ; ASTM A519 Seamless steel pipe (1) ; Alloy seamless steel pipe (2) ; DIN 2391 ST52 Seamless steel pipe (1) ; DIN1629 ST37 Structural Steel Pipe (1) ; Structural Steel Pipe (1) ; EN10210 Seamless steel pipe (1) ; Hot Finished Structural seamless steel pipe (1) ; Hollow Sections of Non-alloy and Fine Grain Steels pipe (1) ; Structural seamless steel pipe (1) ; EN10216 Seamless steel pipe (1) ; Non-Alloy Steel Tubes for Pressure seamless steel pipe (1) ; Straight seam welded steel pipe(LSAW steel pipe) (11) ; Double-sided submerged arc welding steel pipe(DSAW steel pipe) (12) ; longitudinal submerged arc welded steel pipe(LSAW steel pipe) (12) ; Drill pipe (1) ; STEEL FABRICATION (1) ; ACID FURNACE FABRICATION (1) ; :Straight seam welded steel pipe(LSAW steel pipe) (1) ; ASTM A 519 1020 seamless steel tube (1) ; Alloy seamless steel tube (2) ; ASTM A 519 seamless steel tube (2) ; ASME SA519 1045 Steel tube (1) ; ASTM A519 1045 Alloy Steel Seamless tubes (1) ; Alloy Steel Seamless tubes (1) ; Alloy Steel tube (1) ; ASME SA519 1026 Steel tube (1) ; ASTM A519 1026 Alloy Steel Seamless tubes (1) ; Rectangular Steel Tube (1) ;